package com.yuan.springsecurityoauth2.configuration;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.oauth2.config.annotation.configurers.ClientDetailsServiceConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerSecurityConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configurers.ResourceServerSecurityConfigurer;
import org.springframework.security.oauth2.provider.token.store.redis.RedisTokenStore;

/**
 * 配置资源服务器和授权服务器,由于是Oauth2.0的核心配置，所以放到同一个配置类中
 */
@Configuration
public class Oauth2ServerConfig {

	private static final String DEMO_RESOURCE_ID = "order";

	/**
	 * 资源服务器
	 */
	@Configuration
	@EnableResourceServer
	protected static class ResourceServerConfiguration extends ResourceServerConfigurerAdapter {

		@Override
		public void configure(ResourceServerSecurityConfigurer resources) throws Exception {
			resources.resourceId(DEMO_RESOURCE_ID).stateless(true);
		}

		@Override
		public void configure(HttpSecurity http) throws Exception {
			http
					.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.IF_REQUIRED)
					.and()
					.requestMatchers().anyRequest()
					.and()
					.anonymous()
					.and()
					.authorizeRequests()
					//.antMatchers("/product/**").access("#oauth2.hasScope('select') and hasRole('ROLE_USER')")
					.antMatchers("/order/**").authenticated();//配置order访问控制，必须认证过后才可以访问
		}
	}

	/**
	 * 授权服务器(身份认证服务器)
	 */
	@Configuration
	@EnableAuthorizationServer
	protected static class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter{
		@Autowired
		AuthenticationManager authenticationManager;
		@Autowired
		RedisConnectionFactory redisConnectionFactory;
		@Autowired
		UserDetailsService userDetailsService;

		@Override
		public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
			//允许表单认证
			security.allowFormAuthenticationForClients();
		}

		@Override
		public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
			//配置两个客户端,一个用于password认证一个用于client认证
			clients.inMemory().withClient("client_1")
					.resourceIds(DEMO_RESOURCE_ID)
					.authorizedGrantTypes("client_credentials", "refresh_token")
					.scopes("select")
					.authorities("client")
					.secret("123456")
					.and().withClient("client_2")
					.resourceIds(DEMO_RESOURCE_ID)
					.authorizedGrantTypes("password", "refresh_token")
					.scopes("select")
					.authorities("client")
					.secret("123456");
		}

		@Override
		public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
			endpoints
					.tokenStore(new RedisTokenStore(redisConnectionFactory))
					.authenticationManager(authenticationManager)  // 没有它，在使用refresh_token的时候会报错 IllegalStateException, UserDetailsService is required.
					.userDetailsService(userDetailsService)
					// 不加报错"method_not_allowed",
					.allowedTokenEndpointRequestMethods(HttpMethod.GET,HttpMethod.GET);


		}
	}
}
